National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS51 KBOX 010700
CLMBOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
300 AM EDT SUN OCT 01 2023

...................................

...THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            102   09/07/1881
 LOW              34   09/29/1914
                       09/26/1879
HIGHEST           93   09/07                          84
LOWEST            49   09/27                          48
AVG. MAXIMUM    73.3               73.1     0.2
AVG. MINIMUM    61.6               58.2     3.4
MEAN            67.4               65.6     1.8
DAYS MAX >= 90     1                0.8     0.2
DAYS MAX <= 32     0                0.0     0.0
DAYS MIN <= 32     0                0.0     0.0
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.94   1933
 MINIMUM        0.21   1914
TOTALS          3.75               3.56    0.19
DAILY AVG.      0.13               0.12    0.01
DAYS >= .01       12                9.0     3.0
DAYS >= .10        8                6.0     2.0
DAYS >= .50        2                2.1    -0.1
DAYS >= 1.00       1                0.8     0.2
GREATEST
 24 HR. TOTAL   1.52   09/18 TO 09/18

SNOWFALL (INCHES)
RECORDS
 TOTAL           0.0   MM
TOTALS           0.0                0.0     0.0
 LIQUID EQUIV   0.00
SINCE 7/1        0.0                0.0     0.0
DAYS >= TRACE      0                0.0     0.0
DAYS >= 1.0        0                0.0     0.0
GREATEST
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL     56                 71     -15
 SINCE 7/1        56                 80     -24
COOLING TOTAL    136                 91      45
 SINCE 1/1       834                791      43
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
RESULTANT WIND SPEED/DIRECTION   2/020
HIGHEST WIND SPEED/DIRECTION    32/300    DATE  09/16
HIGHEST GUST SPEED/DIRECTION    42/300    DATE  09/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.62
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       6
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      2
HAZE                      1

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$